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International Conference on Electrical Machines and Systems (ICEMS)

作者： Kodai Okazaki Kan Akatsu Kan Yang Advanced Technology R&D Center Mitsubishi Electric Corporation Hyogo Japan Department of Electrical Engineering Yokohama National University Kanagawa Japan

Permanent magnet synchronous motors (PMSMs) have many advantages such as high efficiency. As they are widely utilized for many applications, requirements of less noise and fewer vibrations increase. For a suppression control to the vibration caused by air-gap imbalances, using multi-three-phase PMSMs are suitable method because they can use common three phase inverters. We must detect the air-gap imbalances including static eccentricity and dynamic eccentricity to the suppression control. This paper proposes a method that separately detects static and dynamic eccentricity considering characteristics of the harmonic components of no-load line-line voltages. The method confirms its detection ability by a finite element analysis (FEA) model with eccentricity.

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Neural Network-Enhanced MPPT for Hybrid PV-Wind-Battery dC Micro-grid System 1

Neural Network-Enhanced MPPT for Hybrid PV-Wind-Battery DC M...

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1st renewable Energy Technologies and Modern Communications Systems: Future and Challenges Conference, rETMCS 2024

作者： Pandey, Nirmal Kumar Sharma, Sakshi Gupta, Ankur Kumar Sharma, Priyanka Pachauri, rupendra Kumar Shashikant Haridwar University Uttarakhand Haridwar249401 India Electrical Cluster School of Advanced Engineering UPES Dehradun248007 India R&D Department IIMT University Meerut India Department of Mathematics Shivalik College of Engineering Uttarakhand Dehradun248197 India Miyan Research Institute International University Business Agriculture and Technology Dhaka1230 Bangladesh Electrical Engineering Department Babu Banarasi Das University Lucknow India

ISBN: (纸本)9798331519445

In the pursuit of sustainable energy solutions, the incorporation of photovoltaic (PV) and wind energy systems has gained substantial attention. This paper presents a comprehensive study on a PV Wind Battery-Based dC Micro-grid (MG), optimized using a Neural Network-based Maximum Power Point Tracking (MPPT) algorithm. The proposed MG system aims to enhance energy efficiency and reliability by leveraging the complementary nature of PV and wind power sources, coupled with battery storage for energy management. The neural network MPPT algorithm is designed to dynamically adjust to varying environmental conditions, ensuring optimal power extraction from both PV and wind systems. The effectiveness of the proposed system is validated through extensive simulations results, demonstrating significant improvements in power conversion efficiency and stability, it achieves an efficiency of 99.7%. This research underscores the potential of advanced AI techniques in optimizing hybrid renewable energy systems, paving the way for more resilient and efficient MG solutions. ©2024 IEEE.

关键词： Hybrid power

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real-time dynamic Eccentricity detection by Analyzing Harmonic Components of No-load Line-line Voltages in Multi-three-phase PMSMs

Real-time Dynamic Eccentricity Detection by Analyzing Harmon...

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作者： Okazaki, Kodai Yang, Kan Akatsu, Kan Advanced Technology R&D Center Mitsubishi Electric Co. Ltd. 8-1-1 Tsukaguchi-Honmachi Hyogo Amagasaki661-8661 Japan Department of Electrial Engineering Yokohama National University 79-5 Tokiwadai Hodogaya-ku Kanagawa Yokohama240-8501 Japan

Permanent magnet synchronous motors (PMSMs) are widely utilized for many purposes owing to their high efficiency. Such frequent applications require less noise and fewer vibrations. This work focuses on multi-three-phase PMSMs that can independently control the current among winding groups to suppress the vibrations caused by air gap imbalances, which must be detected for suppression control. The representative effects of air gap imbalance include static and dynamic eccentricities. dynamic eccentricity varies the air gap length in time;therefore, the instantaneous detection of the air gap length condition is necessary for suppression control. We propose a method that instantaneously detects dynamic eccentricity using the fundamental and fourth-order harmonic components of no-load line-line voltages, which are easily measurable in practical manufacturing processes. The proposed real-time detection method is applied to a finite element analysis (FEA) model with dynamic eccentricity, and confirm its detection ability is confirmed experimentally. © 2023 The Institute of Electrical Engineers of Japan.

关键词： Permanent magnets

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Nanoengineered hydrogels as 3d biomimetic extracellular matrix with injectable and sustained delivery capability for cartilage regeneration

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Bioactive Materials 2023年第1期19卷 487-498页

作者： Penglei Cui Panpan Pan Ling Qin Xinluan Wang Xiaodong Chen Yonghui deng Xiaoling Zhang Department of Orthopedic Surgery Xin Hua Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai200092People’s Republic of China Department of Chemistry Fudan UniversityShanghai200433People’s Republic of China Translational Medicine R&D Center Institute of Biomedical and Health EngineeringShenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhen518057People’s Republic of China Department of Spine Surgery Beijing Jishuitan HospitalPeking University Fourth School of Clinical MedicineBeijing100035People’s Republic of China

The regeneration of articular cartilage remains a great challenge due to the difficulty in effectively enhancing spontaneous ***,the combination of implanted stem cells,suitable biomaterials and bioactive molecules has attracted attention for tissue *** this study,a novel injectable nanocomposite was rationally designed as a sustained release platform for enhanced cartilage regeneration through integration of a chitosan-based hydrogel,articular cartilage stem cells(ACSCs)and mesoporous SiO_(2)nanoparticles loaded with anhydroicaritin(AHI).The biocompatible engineered nanocomposite acting as a novel 3d biomimetic extracellular matrix exhibited a remarkable sustained release effect due to the synergistic regulation of the organic hydrogel framework and mesopore channels of inorganic mSiO_(2)nanoparticles(mSiO_(2)NPs).Histological assessment and biomechanical tests showed that the nanocomposites exhibited superior performance in inducing ACSCs proliferation and differentiation in vitro and promoting extracellular matrix(ECM)production and cartilage regeneration in *** a novel multifunctional biocompatible platform was demonstrated to significantly enhance cartilage regeneration based on the sustained release of AHI,an efficient bioactive natural small molecule for ACSCs chondrogenesis,within the hybrid matrix of hydrogel and mSiO_(2)***,the injectable nanocomposite holds great promise for use as a 3d biomimetic extracellular matrix for tissue regeneration in clinical diagnostics.

关键词： Injectable nanocomposite Mesoporous silica 3d biomimetic extracellular matrix Sustained release of anhydroicaritin Cartilage regeneration

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The Toxic Effects of Exposure to Fibrous and Fragmented Microplastic in Juvenile rockfish Based on Two Omics Approach

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SSrN 2024年

作者： Choi, Kwang-Min Mun, Seong Hee Shin, dongju Kim, Chae Hwa Kim, Tae Hee Jung, Jee-Hyun Risk Assessment Research Center Korea Institute of Ocean Science and Technology Geoje53201 Korea Republic of Department of Advanced Textile R&D Korea Institute of Industrial Technology Ansan15588 Korea Republic of

Although the hazards of environmental microplastics (MPs) are well known, it is unclear which of their characteristics have the greatest effects on marine. We investigated the toxic effects of oral administration according to physical properties, including the shape of fragmented polyethylene terephthalate (PET) (FrPET) and fibrous PET (FiPET). After 72 h of exposure, apoptosis and phagocytic activity varied significantly among juvenile rockfish (Sebastes schlegeli) exposed to both FrPET and FiPET. The levels of immune-related genes and hepatic metabolic activity also increased after exposure to both shapes of MPs, but the variation in responses was greater in fish exposed to FiPET compared with those exposed to FrPET. The transcriptomic and metabolomics analysis results indicated that the maintenance and homeostasis of immune systems was affected by oral exposure to FrPET and FiPET. The amino acid metabolic processes were identified in rockfish exposed to FrPET, but the notch signaling pathway were evident in the FiPET exposure group. Metabolomics analysis revealed that oral ingestion of MP fibers led to a stronger inflammatory response and greater oxidative stress in juvenile rockfish. These results can be used to understand environmentally dominant MP toxic effects such as type, size, shapes, as well as to prioritize ecotoxicological management. © 2024, The Authors. All rights reserved.

关键词： Fish

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design and Analysis of Gudgeon Pin to Minimize Stress Concentration by Selecting different Material Through FEA 5th

Design and Analysis of Gudgeon Pin to Minimize Stress Concen...

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5th International Conference on Innovative Product design and Intelligent Manufacturing Systems, ICIPdIMS 2023

作者： Kumaraswamy, J. Siva ramakrishna, Ch. ramasubramanian, S. Mishra, rahul Sakhare, d.T. Karthik, K. Baskar, S. Pandey, Krishna Kant Department of Mechanical Engineering R. L. Jalappa Institute of Technology Karnataka Doddaballapur561203 India Department of Mechanical Engineering Vignan’s Institute of Information Technology Andhra Pradesh Visakhapatnam530049 India Department of Automobile Engineering Vels Institute of Science Technology and Advanced Studies Tamil Nadu Chennai600117 India Department of Mechanical Engineering IES Institute of Technology & Management IES University Madhya Pradesh Bhopal462044 India Department of Chemistry Shivaji Art’s Commerce & Science College Kannad Maharashtra Aurangabad431103 India Department of Mechanical Engineering Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology Tamil Nadu Chennai600062 India Department of Mechatronics Engineering Manipal University Jaipur Rajasthan Jaipur303007 India

ISBN: (纸本)9789819767311

The gudgeon pin is one of the engine's most stressed components. Gudgeon pins are used in automotive engines to link the piston and connecting rod. Stress concentration is a critical concern in the design of mechanical components, as it can lead to premature fatigue failure and, consequently, catastrophic consequences. To mitigate this risk, engineers continually seek ways to optimize the design of components like the gudgeon pin, and one avenue of exploration is the judicious choice of materials. This study looks at the detailed design and analysis of existing gudgeon pins in order to detect the pin's stress concentration and then minimize it by making necessary changes to the pin's design and mounting. The current work involved constructing a gudgeon pin and then using finite element analysis (FEA) software to examine and minimize stresses on the pin. This comprehensive study delves into the intricate world of gudgeon pin design and analysis, with a specific emphasis on minimizing stress concentration by selecting different materials through FEA. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.

关键词： Stress concentration

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Highly Flexible and Transparent Electrodes for High-Performance Thin-Film Heaters with Nanostructured Micromesh Cu–Ag Ultrathin Films

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SSrN 2023年

作者： Han, Suhyeon Jung, dawoon Hwang, Se Hoon Lee, Ho-Nyun Yang, Chanwoo Advanced Nano-Surface and Wearable Electronics Research Laboratory Heat and Surface Technology R&D Department Korea Institute of Industrial Technology Incheon21999 Korea Republic of

Herein, we present a facile method to fabricate transparent, flexible, and high-performance thin-film heaters (TTFHs) based on nanostructured micromesh (NSMM) Cu–Ag/indium tin oxide bilayer transparent thin-film electrodes (TTFEs) with both nano- and microstructures. Our approach combines Ar-assisted thermal evaporation and pulsed laser ablation techniques to fabricate NSMM TTFEs with a low sheet resistance (~2.1 Ω/sq) and high optical transmittance (~80.1%). By adjusting the spacing of the microholes, we were able to achieve excellent figure of merit values (~51.8 × 10−3 Ω−1) for the NSMM TTFEs. These electrodes also showed excellent durability and flexibility, as evidenced by a resistance change of only 4%–18% in cyclic bending tests with up to 200,000 cycles. Finally, we demonstrate that the NSMM TTFEs can be used as high-performance TTFHs with short response times (3.97 s at a steady temperature of 87.5 °C under low-voltage operation (5 V)) and infrared shielding properties. Our results suggest that Cu–Ag-alloy-based NSMM TTFEs are promising transparent electrodes for various applications in flexible electronics, smart windows, and wearable devices. © 2023, The Authors. All rights reserved.

关键词： Copper alloys

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Numerical Analysis of Soliton Propagation in a Tapered Waveguide

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Journal of Optical Communications 2023年第4期44卷 535-538页

作者： raja, M.A. ranathive, S. Sivaram, M. Krishna Kumar, L. Vinoth Kumar, K. Amiri, Iraj S Department of Biomedical Engineering Dr. N.G.P. Institute of Technology Coimbatore India Department of CSE Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology Chennai India Department of Computer Networking Lebanese French University Kurdistan Region Erbil Iraq Department of CSE Nehru Institute of Engineering & Technology Coimbatore India Department of EEE Karunya Institute of Technology and Sciences Coimbatore India Computational Optics Research Group Advanced Institute of Materials Science Ton Duc Thang University Ho Chi Minh City Viet Nam Faculty of Applied Sciences Ton Duc Thang University Ho Chi Minh City Viet Nam

In this paper, dispersion decreased profiled tapered fiber is designed whose dispersion characteristics and soliton propagation is investigated numerically using darboux transformation. The result reveals that solitons pulse gets compression as it propagates along the length of the tapered region. © 2019 Walter de Gruyter GmbH, Berlin/Boston.

关键词： dispersion (waves)

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Highly Flexible and Transparent Electrodes for High-Performance Thin-Film Heaters with Nanostructured Micromesh Cu–Ag Ultrathin Films

SSRN

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SSrN 2023年

作者： Han, Suhyeon Park, Seong Ju Jung, dawoon Hwang, Se Hoon Lee, Ho-Nyun Yang, Chanwoo Advanced Nano-Surface and Wearable Electronics Research Laboratory Heat and Surface Technology R&D Department Korea Institute of Industrial Technology Incheon21999 Korea Republic of

Herein, we present a facile method to fabricate transparent, flexible, and high-performance thin-film heaters (TTFHs) based on nanostructured micromesh (NSMM) Cu–Ag/indium tin oxide bilayer transparent thin-film electrodes (TTFEs) with both nano- and microstructures. Our approach combines Ar-assisted thermal evaporation and pulsed laser ablation techniques to fabricate NSMM TTFEs with a low sheet resistance (~2.1 Ω/sq) and high optical transmittance (~80.1%). By adjusting the spacing of microholes, we can achieve excellent figure of merit values (~51.8 × 10−3 Ω−1) for the NSMM TTFEs. These electrodes also show excellent durability and flexibility, as evidenced by a resistance change of only 4%–18% in cyclic bending tests with up to 200,000 cycles. Finally, we demonstrate that the NSMM TTFEs can be used as high-performance TTFHs with short response times (3.97 s at a steady temperature of 87.5 °C under low-voltage operation (5 V)) and infrared shielding properties. Our results suggest that the Cu–Ag-alloy-based NSMM TTFEs are promising transparent electrodes for various applications in flexible electronics, smart windows, and wearable devices. © 2023, The Authors. All rights reserved.

关键词： Copper alloys

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Analysing various algorithms applied to Alzheimer’s disease dataset to help the Future Generation

Analysing various algorithms applied to Alzheimer’s disease...

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Intelligent and Innovative Technologies in Computing, Electrical and Electronics (IITCEE), International Conference

作者： S. Athinarayanan K. Navaz Tamilselvi. P Shajeena J Vishwa Priya V M. robinson Joel Department of CSE School of Computing Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology Avadi Chennai Tamil Nadu India Department of Computer Science and Engineering Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology Avadi Chennai Department of Computer Science Vels Institute of Science Technology and Advanced Studies Chennai Department of CSE School of Computing Veltech Rangarajan Dr. Sakunthala R&D Institute of Science & Technology Department of Computer Science Vels Institute of Science Technology and Studies Chennai Department of Information Technology Kings Engineering College Chennai India

A sort of brain illness that affects the brain is Alzheimer's. Nowadays, older adults are more likely to have these ailments. People who have this illness have very poor memories and decreased memory. Additionally, their brain isn't working correctly. As a result, their regular practice is progressively beginning to decline. Alzheimer's is a kind of dementia for which there is no definitive treatment. This essay will help us learn more about Alzheimer's illness. We shall learn more about its causes, symptoms, and remedies. Additionally, we investigate several illness prediction methods employing Graph Neural Networks denoted as GNNs. decision Tree, random Forest algorithms, and more. However, the random forest classifier gave good results with 86% accuracy and good recall values.

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